/**
 * Copyright (c) 2012-2017, www.tinygroup.org (luo_guo@icloud.com).
 * <p>
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * <p>
 *       http://www.gnu.org/licenses/gpl.html
 * <p>
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.ansjanalyzer;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

import org.ansj.domain.Term;

public abstract class AbstractTokenStreamWrapper implements TokenStreamWrapper{

    private int p = -1;
    private List<Term> termList = null;
    
    public AbstractTokenStreamWrapper(Reader input) throws IOException {
    	BufferedReader reader = null;
    	try{
    		reader = new BufferedReader(input);
    		String line = null;
    		termList = new ArrayList<Term>();
    		while ((line = reader.readLine()) != null) {
    			termList.addAll(parse(line));
    		}
    	}finally{
    		if(reader!=null){
    		   reader.close();	
    		}
    	}
    }
    
	public void reset() throws IOException {
		p = -1;
	}

	public Term next() throws IOException {
		p++;
		if(p<termList.size()){
		   return termList.get(p);
		}
		return null;
	}

}
